Starting mechanism



L. BLACKMORE STARTING MECHANISM Dec. 3 9 1924 Filed Jan. 5, 1925Patented Dec, 23, lQZ l,

srnres rarest orator.

ILLQYD BLAGKMORE, 01E HIGHLAND PARK, MICHIGAN ASSIGNUR T GENERAL MOTORSCORPORATION, OF DETROIT, MIGHIGAN, A CURPORATIU'N 0F DLLAWAEE.

sran'rrire'nncnanrsia.

Application filed January 5, 1923. Serial l lo. 810,808.

To all whom 571 may concern." I

Be it known that l, LLOYD BLAcKMonn, a citizen of the United States, anda resident of Highland Park, county of Wayne, and State of Michigan,have invented certain new and use i111 Improvements in StartingMechanism, of which the following is-a full, clear, concise, and exact'descriptiomsach as will enable others skilled in the art to which theinvention relates to make and use the same, reference being made thereinto the accompanying drawings,. which form a part of this specification.

This invention relates to starting mechanism, and is illustrated asembodied in mechanism of the type in which a starting.

motor is provided with a rocker arm operated by the torque of themotorto carry grooved friction wheel against. a peripherally groovedflywheel.

An objector the invention is to simplity mechanism or this character byarranging the friction wheel with grooved teeth so that it can meshdirectly with a gearon-the motor shaft, and to avoid any tendency tojump when the grooved wheels engage one another by arranging the groovedteeth Oil the friction wheel spirally, that isby arran in these aratero'ections or teeth in spiral rows. llprefer to make the-friction wheelby securing together a plurality of disks, each formed with radial teeththinned down to lit in the grooves of vthe flywheel, the teeth of theseveral disks, as explained ahove, being arranged in spiral rows.

@ther obiects: and features of the inven tion will be apparent from the"following description of anillustrativeembodiment of the inventionshown in the accompanying drawings, in which:

Figs. 1 and2 are end elevations of the mechanism, in idle and startingpositions respectively; and

Fig. 3 is a corresponding side elevation.

The starting mechanism shown includes a flywheel l0, peripherallygrooved at 12, and a starting motor 14': having a drive shaft 16carrying a spiral gear 18. A forked rocker arm 20 is mounted on thedrive shaft, where it is held by a lock unit Q2, one; is normally heldinidle position lay a spring 2 1- attached to a rearwardly projecting arm26..

donrnaled rocker arm 2t) is planetary bodily movement relatively to thegear or friction drive wheel 28 formed ot a plurality'of disks securedtogether, each ofthe disks being formed with radially projecting teeththinned down to fit into grooveslQ. As above explained and as clearlyshown in the drawings, these teeth are arranged in spiral rows, so thateach row may be regarded as a single grooved spiral tooth meshing: withgear 18, the grooves meshing with grooves 12 when in starting aposition.

- in order to make sore that the torque of shaft 16 will turn gear orwheel 28 into mesh with grooves 12, a friction washer 30 may beprovided.

-in-operation, the parts being in the posi tion shown in Fig. l, themotor is started,

has been illustrated and described, it is not my intention to limit itsscope thereby, or

otherwise than by the terms of the appended claims.

I claim: 1

1. Starting mechanism comprising, in combination, a peripherally groovedwheel, *a'motor having a drive shaft, a driving gear on said shaft. arocker arm'shiftable about the axis of said shalt by the torque thereof,

and a gear carried by the arm and having teeth meshing with the teeth ofthe driving gear, theteeth being grooved to engage the grooves in theflywheel.

2. Starting mechanism comprising, in combination, a peripherally groovedwheel, a motor having a drive shaft, and a second wheel geared to theshaft and arranged for shaft to engage the grooved wheel, the secondwheel being formed with spirally arranged rows of teeth meshing in thegrooves of the first wheel. 1

Starting mechanism comprising, in combination, a peripherally groovedwheel, motor having a drive a spiral driv= Mill ing gear on said shaft,and a driven gear having grooved spiral teeth meshing with the-teeth ofthe driving gear and arranged to be rocked by the torque of the shaft tomesh with the grooves in said wheel.

4. Starting-Q mechanism comprising, .in combination, a peripherallygrooved wheel,

.a motor having a driveshaft, a spiral driving gear on the shaft. arocker arm yieldingly urged away from the grooved wheel, and a drivengear carried by the arm having grooved spiral teeth meshing with theteeth of the driving gear, the arm being so arranged that'the torque ofsaid shaft rocks' the arm-to vcause the grooves of the teeth of thedriven gear to mesh with the grooves in said wheel.

5. Starting mechanism comprising, in combination, a peripherally groovedwheel,

a motor, having a drive shaft, and a second wheelgeared t0. the shaftand arranged for bodily movement relatively thereto to engage thegrooved wheel, the second wheel consisting of a pluralityof diskssecured together, each disk being formed with radially' projecting teeththinned down to fit in' the 'groovesofthe first wheel.

6. Starting .mechanism comprising, in

combination, a peripherally grooved wheel,

1y projecting teeth thinned down to fit in the grooves of the firstwheel, the teeth on the various disks being arranged inspiral rows toform spiral teeth as described.

In testimony whereof I aflix my signature. 40

' LLOYI) BLACKMQRE.

